Pittsburgh_Rope_SOW_Attachments.pdf

AWS D1 .1/D1 .1 M:2010 PARTS D& E CLAUSE 6. INSPECTION

6.14.6 Personnel Qualification

6.14.6.1 ASNT Requirements. Personnel perform

ing NDT other than visual shall be qualified in conform ance with the current edition of the American Society for Nondestructive Testing Recommended Practice No.

SNT-TC-lA. Individuals who perform NDT shall be qualified for:

(1) NDT Level II, or

(2) NDT Level I working under the NDT Level II

6.14.6.2 Certification. Certification of Level I and

Level II individuals shall be performed by a Level III in dividual who has been certified by (1) The American Society for Nondestructive Testing, or (2) has the educa tion, training, experience, and has successfully passed the written examination described in SNT-TC-lA.

6.14.6.3 Exemption of QCl Requirements. Person

nel performing NDT under the provisions of 6.14.6 need not be qualified and certified under the provisions of

AWS QCI.

6.15 Extent of Testing

Information furnished to the bidders shall clearly identify the extent of NDT (types, categories, or location) of welds to be tested.

6.15.1 Full Testing. Weld joints requmng testing by

contract specification shall be tested for their full length, unless partial or spot testing is specified.

6.15.2 Partial Testing. When partial testing is speci

fied, the location and lengths of welds or categories of weld to be tested shall be clearly designated in the con tract documents.

6.15.3 Spot Testing. When spot testing is specified, the

number of spots in each designated category of welded joint to be tested in a stated length of weld or a desig nated segment of weld shall be included in the infor mation furnished to the bidders. Each spot test shall cover at least 4 in [100 mm] of the weld length. When spot testing reveals indications of unacceptable disconti nuities that require repair, the extent of those discontinu ities shall be explored. Two additional spots in the same segment of weld joint shall be taken at locations away from the original spot. The location of the additional spots shall be agreed upon between the Contractor and the verification Inspector.

When either of the two additional spots show defects that require repair, the entire segment of weld represented by the original spot shall be completely tested. If the weld

Copyright Amencan Welding Society Provided by IHS under hcense with AWS No reproduction or networking permitted without license from IHS involves more than one segment, two additional spots in each segment shall be tested at locations agreed upon by the Contractor and the verification Inspector, subject to the foregoing interpretation.

6.15.4 Relevant Information. NDT personnel shall, prior to testing, be furnished or have access to relevant information regarding weld joint geometries, material thicknesses, and welding processes used in making the weldment. NDT personnel shall be apprised of any sub sequent repairs to the weld.

PartE Radiographic Testing (RT)

6.16 RT of Groove Welds in Butt Joints

6.16.1 Procedures and Standards. The procedures and

standards set forth in Part E shall govern RT of welds when such inspection is required by the contract docu ments as provided in 6.14. The requirements described herein are specifically for testing groove welds in butt joints in plate, shapes, and bars by X-ray or gamma-ray sources. The methodology shall conform to ASTM E 94, Standard Recommended Practice for Radiographic Test ing, ASTM E 142, Standard Method for Controlling Quality of Radiographic Testing, ASTM E 747, Controlling Quality of Radiographic Testing Using Wire Penetrame ters, and ASTM E 1032, Radiographic Examination of Weldments.

6.16.2 Variations. Variations in testing procedures, equipment, and acceptance standards may be used upon agreement between the Contractor and the Owner. Such variations include, but are not limited to, the following:

RT of fillet, T, and comer welds; changes in source-to film distance; unusual application of film; unusual hole type or wire-type image quality indicators (IQI) applica tions (including film side IQI); and RT of thicknesses greater than 6 in [150 mm] film types, densities, and vari ations in exposure, development, and viewing techniques.

6.17 RT Procedures

6.17.1 Procedure. Radiographs shall be made using a

single source of either X- or gamma radiation. The radio graphic sensitivity shall be judged based on hole-type image or wire IQis. Radiographic technique and equip ment shall provide sufficient sensitivity to clearly delin eate the required hole-type IQis and the essential holes or wires as described in 6.17.7, Tables 6.4 and 6.5, and

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